Dry battery



Aug. 3 1926.

A. T. BALDNEN DRY BATTERY Filed May 22, 1923 2 Sheets-Shei 1 [N VENTOR H1. c. E N '7 31 5 1 1 :1 W1

ATTORNEY-S Aug. 3 19%. ELJWMMWW A. T. EiiNLMDWi-N DRY BATTERY Filed May 222, 1923 2 Sheets--3 3M;

1N VENTOR NL L Em I if] EMU WHv all lessees permit the lug 19 to pass therethrougl latter thus serving as means for retain ng the plate in proper position. The inner side of the plate is preferably squared at 2'7 and forms a locating abutment for one end of the spacer block 21 which is thus readily positioned properly with respect to the several cells.

After the straps 15 and 18 have been connected, the cover is pressed firmly down upon the spacer block (previously placed inposition), and the cover margin 28 rolled over the ont-turned margin of the casing 10 and pressed against the side of the latter to form a practically water-tight seal. A si1nilar joint 29 is formed between the bottom 30 and the body 10 of the casing, so that the v casing affords an fi ective watertight closure for the cells.

To properly locate the cover 20 with respect to the casing wall, and to facilitate the formation of its marginal seal, the cover is preferably cupped. In view of the fact that moisture is apt to gather within the cupped cover and penetrate to the interior of the battery unit through the apertures necessary for the passage of the binding terminals 16 and 17 therethrough, and also for the rivetsby which. the handle 24: is secured to the cover, the latter, at the points at which it is apertured, is raised at least to the level of the side flanges 31. As here shown, the pierced areas are in the form of independent bosses 32 and 33, the tops of which lie substantially in the plane of the top of the side flanges 31 of the cover. Ob

viously they may be raised slightly above this level if desired, but I have found that all necessary practical protection is afforded by arranging the tops of the bosses in the plane of the top margins of the side flanges 31. It seldom happens that the battery. lies in an exactly horizontal position, and standing water constantly overflows the flange 31 before it rises above the top of the bosses 32 and 33. Moreover, when the cover is forced down upon the spacing block 21 a slight outward bowing (not shown) of the cover may resultwhich raises the tops of the bosses 32 and 33 slightly above the level. of the cover margin,

As shown in Fig. 4:, the handle 24:, referably of flexible material, such as fa ric, is secured at its opposite ends to clips 34- each of which is provided with a base 35 pierced at 36 to receive a rivet 37 which passes therethrough and through a corresponding hole in the top of one of the bosses, and is spread beneath a Washer 38 arranged around the item of the rivet on the other face of the oss.

Each binding terminal comprises a post having a threaded outer end 39, an abutment flange 40, and a rectangular shank ll, the latter passing through a large hole 42 in the is a second insulating washer iii.

an aperture 4;? shaped to the contour of the stem ll of the post which n therethrough and is hold thereby tion. The Washer is fiCCillwliQl} shzuped to the inner contour of the boss and is also provided with an extended area notched at to straddle and closely engage the washer 38 over which the end of the rivet ST is spread. The close engagement of the margin of the washer 46 with the sides of the boss, and. li S engagement with the washer 38, holdthe Washer rigidly in position, and by reason of the non-circular contour oi? the aperture 47 therein, through which the non-circular stem. 41 passes, the post is held against. rotation incident to the torsional strains applied thereto by the thumb nut iii, The 'ashcr 46 also serv s to accurately position the post with respect to the aperture in ihc boss through which it pas s. and from the mar gins of which it is accui t i hold in spaced relation. insulating" washer Below the "in is arranged a metal Washer 425) pierced at 50 to accommodate the stem or" the binding; post, which passes theretl'irough. and through thc hole 51 in the connecting strap 15, beneath. which is arranged another metal wuslmr apertured at 53 to :icconunoejluic the stem i]. of the binding post and over which the pro jecting end of the stem is spread to rivet the earls in assembled condition, The riret ing operation is per ornied under such pressure that the portions of the insulating washers 2 2 and u'hicu ac the aperture 42 in the boss. forced into the latter and in silent form an insular lmshii o lining; the anerture and elihc'iiir Y spacing: the hindin post from I 51 th; v

It will be noted that the connect 15 passes through a qloi' in the ll" 25 of insulation and offset fi l below the latter, thus supporting the sheet against the inner face of the cover plate and ciici-iivcly insulating the letter from possible accidental. contact with any oi the conductors within the casing. The hinge bend of the strap is indicated at 55 and, as above stated, lucilitates its connection with the center post head 12 of the cell 9 during the assembly of the cover.

The construction illustrated provides a multi-cell unit having many advantages over the. structures heretofore available in (l) that the several cells of the unit are firmly secured in position by the arched insulating block 21 interposed between some and the lEO cover, so that all danger of pessible injury to the connections between the tarieus eelle incident to aciglental displacement elf the cells with relation to each other is completely avoided; (:2) that. all danger of possible short circuit of the terminal cell 6 by the contact strip 18 is prevented by the insulating plate 26; .(3) that all pcrforatione of the cover through which leakage might occur are raised above the level (if Stanilmg water in the cover: (al that the terminal posts are more perfectly insulated from the cover and. eccnrccl against rotary tliepluccnient; (5) that all of the parts are readily nnin rl'actnretl antl assembled.

The construction (.lescribccl is merely illuetrative of, I11) invention, which. is subject to various modified embodiments obvious to those skilled in the art, which do not clepare from the scope of ii'liat l: claim as my in ention.

l claim as m3 invention-- L ln a multi-eell battery unit, a sheet metal casing having within it cells; 111113130 tected against moisture, a cupped cover lei" Sillll casing, handle and' binding terminal elements piercing said cover Within the area dclinecl by the raised; side margins 01": the cup, said cover being eli'set iii the areas pierced by the said elements to raise saitl pierced areas above the body level of the cover.

2. in a malti-cell battery unit, a sheet, metal casing having within it cells unprelwclZOil against moisture, a cupped cover for gain easing, bosses rising from the hotly of the cover to at least the level of the title margins thereof, and handle anol binding terminal elements; piercing the i'aisecl areas of saiil bosses, the body of the eup-shapetl rover being impetforate.

3. In it multicell battery unit, a sheet metal casing and a cover therefor, a series of battery cells arranged side by side in line within the casing a terminal lug ptvijecting l IUlU the cell at one anal iii the series, an

insulating; plate piercecl by saicl lug and heltl in. position "thereby, in combination with a spacer bleelt abutting; at one entl against said plate and interposed lOElZW BEH eaicl cover and cells to maintain the latter lirn'ily against (lieplaeen'ietit.

l. ll multitell battery comprising a caeing, a aei'ies elf b i y cells arranged there in, acaaint cover, an insulating lining of sheet material slotted at apprepriate point-a, binding terminale carried by the cover and; connector straps engaging Silitlv terminals anti eater-(ling in. oppeeite tlirectitjns through the slots in the lining sheet to hold the latter in position with respect to the COVQI".

A 111ulti-eell battery comprising" an elongated asing, a series of battery cells arrangetl therein, an elongated cover for the casing, an insulating lining of sheet material for said cover slotted at appropriate points, binding terminals carried by the cover toward its opposite 611F139 and connection straps engaging saitl terminals and extending in opposite directions, lengthwise til the cover, through the slots in the lining sheet to hold the latter in pesition with respect t0 the.

cure;

{3. i l multi-cell battery comprising an elongated casing, a series of battery cells arrangetl therein, an elaiigatetl cover for the caein' an insulatingggl neg); til sheet mate rial 'zer saicl [ml/F21 slottecl at ap nrepriate points, binding terii'iinale earrieoi by the enter tewa rtl eppueiteends, anal cennectime straps engaging saiel tern'iinals antl extending in eppeaite directions, lengthwise of the carver, through the slots in the lining sheet te hold! the latter in positiqh with respect tn the cover, one elf eairl, having a. return bentl therein t0 facilitate its engagement with the center centact of the cell at one end of the eeriea I lln teetiinong whereof I have signed my name te this specification. 

